The Israeli military says it is carrying out "extensive strikes" in the Gaza Strip, with the Hamas-run health ministry reporting that at least 220 Palestinians have been killed.

The Israel Defense Forces (IDF) said it was targeting what it called "terror targets" belonging to Hamas.

Mahmoud Abu Wafah, the deputy interior minister in Gaza and the highest-ranking Hamas security official in the territory, has reportedly been killed in a strike.

This is the largest wave of airstrikes in Gaza since the ceasefire began on 19 January. Talks to extend the Gaza ceasefire have failed to reach an agreement.

Many people were having their pre-dawn meal, due to it being the holy month of Ramadan, when explosions started in Gaza, witnesses say.

More than 20 Israeli war planes flew over, they said. The planes then began to hit targets in Gaza City, Rafah and Khan Younis.

Israeli Prime Minister Benjamin Netanyahu and Defence Minister Israel Katz ordered the strikes on Tuesday morning, according to a statement from the PM's office.

"This follows Hamas's repeated refusal to release our hostages, as well as its rejection of all of the proposals it has received from US Presidential Envoy Steve Witkoff and from the mediators," it said.

"Israel will, from now on, act against Hamas with increasing military strength," it added.

The plan for the strikes "was presented by the IDF over the weekend and approved by the political leadership", it said.

Israel's Ambassador to the UN, Danny Danon, warned Hamas to release all the hostages, stating "we will show no mercy on our enemies".

Hamas has responded furiously, accusing Israel of treachery for overturning the ceasefire agreement. It also says Israel is exposing the remaining Israeli hostages held in Gaza to "an unknown fate".

But Hamas has not yet declared that it is resuming the war, instead calling on mediators and the United Nations to intervene.

US President Donald Trump's administration was consulted by Israel prior to carrying out the strikes, a White House spokesperson told Fox News.

Negotiators have been trying to find a way forward after the first phase of the temporary truce ended on 1 March.

The US proposed extending the first phase until mid-April, including a further exchange of hostages held by Hamas and Palestinian prisoners held by Israel.

But a Palestinian official familiar with the talks told the BBC that Israel and Hamas disagreed over key aspects of the deal set out by Witkoff at the indirect talks.

The latest war between Israel and Hamas started on 7 October 2023, when Hamas killed more than 1,200 people in southern Israel, mostly civilians, with 251 taken hostage.

The assault triggered an Israeli military offensive that has since killed more than 48,520 people, most of them civilians, according to figures from the Hamas-run health ministry which are used by the UN and others.

Most of Gaza's 2.1 million population has been displaced multiple times.

An estimated 70% of buildings have been damaged or destroyed, healthcare, water, and sanitation systems have collapsed and there are shortages of food, fuel, medicine and shelter. (BBC)

PHOTO: Mahmoud Abu Watfa attends a training session in Gaza City in January 2020.Reuters

Mahmoud Abu Wafah, the highest-ranking Hamas security official in the territory, has reportedly been killed (Reuters photo from 2020)

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